Tunnel in the Sky

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Overview:

Title: Tunnel in the Sky
Author: Robert A. Heinlein
Year: 1973
Publisher: Ace Books
Price: $0.95
Pages: 253
Binding: Paperback
Type: Novel
Title Reference: Tunnel in the Sky
Notes:
• ©1955 No other statement of publication or printing • Cover art is credited to Savage on the copyright page; no visible signature • Year of publication from ads in the back, see below • There are four printings with the same catalog #/price/cover. • Externally they are identical in every way, internally the only difference is the ads in the back. This printing has three pages of numbered ads: 25C, 16A, 17B, the combination appearing only in 1973, February to April.